JPH0145137Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mounting base for a vehicle antenna, which is used for mounting an electric antenna or the like on the roof of an automobile.

[Conventional technology]

Generally, to install a vehicle antenna on the roof of a car, the mounting base is supported on the outside of the car body via a rubber seat, the mounting base is fixed to the car body with mounting screws at two places, and the antenna is inserted through the mounting base. The main body is fixed to the mounting base.

Traditional mounting bases were initially constructed from die-cast metal products, which were costly and heavy. Therefore, mounting bases made of synthetic resin molded products have come to be used, which are inexpensive and weigh about 1/4 of the weight of die-cast products.

[The problem that the idea aims to solve]

However, the mounting base of a synthetic resin molded product may crack if a strong pulling force is applied when extending the antenna rod even for a manual antenna. Not only is the weight of the electric motor of the drive part applied to the antenna rod, but also the impact load is applied due to the expansion and contraction movement of the antenna rod, causing problems such as cracks in the mounting base and other problems in terms of strength.

In order to solve this problem, it has been proposed to reinforcing the synthetic resin by inserting a metal plate inside it and molding it at the same time. Cracking occurred in the synthetic resin near the mounting screw insertion hole, and the strength problem could hardly be resolved.
It is also possible to change the shape of the mounting base, but this is extremely difficult due to the shape of the vehicle body, such as the roof of the vehicle.

The present invention was made for the purpose of solving the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, the mounting base of the vehicle antenna according to the present invention is made of a synthetic resin molded product, and includes a base body that is rectangular in plan and has no bottom.
A reinforcing metal fitting having a flat part fitted to the bottom side of the main body is caulked and fixed at both ends in the length direction by fastening metal fittings, and these fastening metal fittings form an insertion hole for a mounting screw to the vehicle body side. The reinforcing metal fitting is characterized in that a support part for the antenna main body that penetrates the mounting base is formed.

[Effect]

By the above means, the area around the mounting screw insertion hole is reinforced, and the antenna is reinforced so as to support and absorb the load of the antenna.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 5, reference numeral 1 is a base body made of a molded synthetic resin, rectangular in plan, and without a bottom. A reinforcing metal fitting 2 having a flat portion is fitted therein. This reinforcing metal fitting 2 has a rising portion 2a formed on the peripheral edge supported by the inner circumferential surface of the lower part of the peripheral wall of the base body 1, and reinforcing bulging portions 2b are formed at a plurality of locations so as to bulge upward, Furthermore, it is fixed to the base main body 1 by metal fittings 3 at two locations on substantially diagonal lines at both ends in the length direction. And, such a base body 1
A hole 1a through which the antenna body 4 diagonally passes is formed in the hole 1a, and a hole 2c formed in the reinforcing metal fitting 2 concentrically with the hole 1a has a hole 2c formed in the periphery of the hole 2c, which also serves as a guide for the antenna body 4. Circular support part 2
d and 2e are opposed to each other and protrude diagonally upward and diagonally downward, respectively. Note that the reference numeral 2f in the figure is a screw hole provided in the reinforcing metal fitting 2.

As shown in FIG. 6, the mounting base of the embodiment configured as described above is supported on the outer surface of the roof of an automobile via a rubber seat 5, and is attached to the roof by means of a mounting screw 6 inserted through a grommet fitting 3. and hole 1
The antenna main body 4 of the telescopic multi-stage rod antenna is inserted through a and 2c. The antenna main body 4 is fixed by clamping the mounting base and the roof using conventionally known means, and is supported by the supporting parts 2d and 2e of the reinforcing metal fitting 2. In addition, as shown in FIG. 7, the antenna body 4
The ground plate 7 connected to the braided wire of the coaxial cable attached to the Grounded.

The mounting base of the embodiment configured as described above is relatively lightweight since its main components are the base body 1 made of a synthetic resin molded product and the reinforcing metal fittings 2 made of a bent metal plate. Since the antenna 1 is reinforced with the reinforcing metal fitting 2, it can withstand the load even when used in an electric antenna. Furthermore, in this embodiment, the base body 1 and the reinforcing metal fittings 2 are fixed with the eyelet fittings 3, and these form the insertion holes for the mounting screws 6 to the vehicle body side, so that when the mounting base is fixed to the vehicle body side, the mounting screws 6 can be inserted. The tightening force of the screw 6 is received by the eyelet fitting 3, the tightening force is not applied directly to the base body 1, and since the antenna body 4 is supported by the support parts 2d and 2e of the reinforcing metal fitting 2, the antenna body 4 The reinforcing metal fittings 2 can support the load of
The impact when the antenna rod expands and contracts can be absorbed by the reinforcing metal fittings 2. Therefore, the base body 1 made of synthetic resin
This can prevent cracks and cracks from occurring. Moreover, since the shape of the mounting base that matches the shape of the roof of the vehicle body can be maintained, the design will not be deteriorated.

[Effect of idea]

As explained above, according to the present invention, a reinforcing metal fitting having a flat part is fitted to the bottom side of a bottomless planar rectangular synthetic resin base body, and these are fixed by caulking with fastening metal fittings at both lengthwise ends. So,
Although it is lightweight, it is possible to insert a mounting screw into the eyelet metal fitting and tighten it to the vehicle body, and to support the antenna body with a support section provided in advance on the reinforcing metal fitting, which prevents cracks from occurring in the base body. To provide a mounting base for a vehicle antenna which can be used also for an electric antenna without any problems and can maintain the conventional shape without detracting from the design.

[Brief explanation of the drawing]

Fig. 1 is a partially vertical side view showing an embodiment of the present invention, Fig. 2 is a bottom view of the same, Fig. 3 is a cross-sectional view of the same, Fig. 4 is a cross-sectional view of the eyelet fitting part, 5 is a partially enlarged view of FIG. 4, FIG. 6 is a perspective view of the device in use, and FIG. 7 is an explanatory view seen from the bottom side. DESCRIPTION OF SYMBOLS 1... Base body, 1a... Hole, 2... Reinforcement fittings, 2a... Rising part, 2b... Swelling part, 2c
... Hole, 2d, 2e ... Support part, 2f ... Screw hole, 3 ... Eyelet fitting, 4 ... Antenna body, 5
...Rubber seat, 6...Mounting screw, 7...Ground plate,
8...Bis.

Claims (1)

[Scope of utility model registration request] A base body made of a synthetic resin molded product and having a flat rectangular shape with no bottom, and a reinforcing metal fitting having a flat part fitted to the bottom side of this main body are caulked and fixed at both lengthwise ends with fastening metal fittings. A mounting base for a vehicle antenna, characterized in that the eyelet metal fitting forms an insertion hole for a mounting screw to the vehicle body side, and the reinforcing metal fitting further has a support part for an antenna body that passes through the mounting base.